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Product DescriptionThis SD Card Mobile Digital Video Recorder is made for traffic safety, it is an embedded Linux system DVR with4 channels. It has high-intelligentization and stability with an embedded processor and operating system, which combines video and audio compressions,GPS,black box,mass storage hard disk. Widely used for security and surveillance in the domain of Mobile,Steamship,Train,etc.Featurel Embedded Linux systeml H.264 videoformatl Chinese/English menu optionalTechnical parameterVideo input: 4channels input independently, WL:1.0Vp-p,Impedance:75Ω, Support monochrome/color camerasVideo output: 1channel PAL/NTSC output,PWL:1.0Vp-p, Impedance:75ΩVideo display: single-screen,4 screen displayVideo standard: PAL: 25frames/sec NTSC: 30frames/secSystem resources: PAL: 100frames NTCS: 120framesAudio input:1 channels independently input, Linearity PWL:1.0-2.2vp-p , Impedance: 600ΩAudio output: 1channelDistribution plus noise: ≤-30dBReal-time surveillance : PAL: 100 fps , NTSC: 120 fps ,synchronous video/audioReal-time resolution : 1 channel CIF (352*288);4 channel CIF(352*288)Compression : H.264Compress Resolution:PAL:100f, NTSC:120fVideo quality: 3 grades adjustableDouble SD card storage: Maximum support 2*32GB SD cardRecord mode: sensor,programmed,motion;Support 4channels video/1channels audio record in syncSearch mode : time ,date and eventsSupport 4 channels video and 1channel audio search/play in syncSupport 1channel amplifying playback and 4channels in sync1 infrared remote portPower input:DC8-48V, Power switch,Over-current, over-voltage protection, time-lapse power off function.Power output:DC12V for camera, pickup or velocity sensorAnti-vibration and fanlessdesignWork Temp:-20degree to +60degreeSize:120(W)x180(L)x50(H)mmWeight: 1.0KGS(without Brachet)